Can someone help me make this work?

My program worked earlier this year before Windows 10 put and update and suddenly it doesn't work anymore. I have a separate laptop that didn't get the update and it works perfectly. Can someone please tell me what I need to do to get it to work? Ive tried everything I could think of and nothing works.

                    string[] music = Directory.GetFiles(@"C:\Users\Robert\Documents\C# stuff\Skynet\Skynet\bin\Debug\Music file", "*.mp3");// this is the original path

                    WMPLib.IWMPPlaylist Classicalplaylist = mplayer.playlistCollection.newPlaylist("classicalplaylist");
                    foreach (string file in music)
                    {
                        WMPLib.IWMPMedia media = mplayer.newMedia(file);
                        Classicalplaylist.appendItem(media);
                    }
                    mplayer.currentPlaylist = Classicalplaylist;